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344821 (2004 ER6)
Classification: Main-belt Asteroid          SPK-ID: 2344821
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06305250438154311 4.6204e-08  
a 2.332862800504261 1.5096e-08 au
q 2.185769958553927 1.1213e-07 au
i 6.510611787230641 4.7712e-06 deg
node 351.611196354365 4.8439e-05 deg
peri 182.9635440085781 6.7294e-05 deg
M 252.7148899256229 4.8654e-05 deg
tp 2459588.354803256160
(2022-Jan-08.85480326)
0.00017774 TDB
period 1301.464192705013
3.56
1.2632e-05
3.458e-08
d
yr
n .2766115287826414 2.6849e-09 deg/d
Q 2.479955642454595 1.6048e-08 au
  Orbit Determination Parameters
   # obs. used (total)      244  
   data-arc span      6164 days (16.88 yr)  
   first obs. used      2004-02-26  
   last obs. used      2021-01-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59893  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 16:02:42  

Additional Information
 Earth MOID = 1.18989 au 
 Jupiter MOID = 2.48365 au 
 T_jup = 3.558 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 17.2   n/a MPO437461  

344821 (2004 ER6)          Discovered 2004-Mar-12 by NEAT at Palomar
Reference: 20121128/Numbers.arcLast Updated: 2012-12-03

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1914-Jan-31 07:03 00:35 Amphi 0.024585724284293 0.0245783722204166 0.0245931284169257 1.59700377202336 1.59700362560886 2420163.793575434 35.2795024532886 1893.99884972394 106.796412737357 79.3519539970979 33739.9299446887 T 14 CATAB v2.0f-lin.ifort 2021-Feb-24 16:02:43 2021-Feb-24 16:02
2109-Apr-14 05:50 00:19 Amphi 0.0323294695476933 0.0322996333842502 0.0323593227433216 1.78147176925484 1.78147166943991 2491459.743161691 19.2036384379209 1891.13637772972 79.3349745495394 -38.2571198647218 37703.0349205193 T 14 CATAB v2.0f-lin.ifort 2021-Feb-24 16:02:43 2021-Feb-24 16:02
2138-Sep-06 19:16 00:32 Amphi 0.024745472765686 0.0247228056490145 0.0247682215342342 1.66321678900961 1.66321664933147 2502197.302810305 32.3685459139858 2514.1902833734 107.436623270101 -63.3759287837087 30718.9746976846 T 14 CATAB v2.0f-lin.ifort 2021-Feb-24 16:02:43 2021-Feb-24 16:02
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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